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公开(公告)号：WO2023062271A1
公开(公告)日：2023-04-20
申请号：PCT/FI2022/050659
申请日：2022-10-04
发明人： KONDRAD, Lukasz , ILOLA, Lauri Aleksi , KAMMACHI SREEDHAR, Kashyap , MATE, Sujeet Shyamsundar , AKSU, Emre Baris
IPC分类号： H04N21/234 , H04N13/161 , H04N13/271 , H04N21/6437 , H04L65/65 , H04L65/70 , H04N21/84
摘要： The embodiments relate to a method and technical equipment for volumetric video coding. The method comprises receiving (905) a bitstream representing coded volumetric video; demultiplexing (910) the bitstream into a number of sub-bitstreams; encapsulating (915) the sub-bitstreams to a Real-time Transfer Protocol (RTP) payload format; sending (920) the encapsulated sub-bitstreams over one or more RTP session to a client; and providing (925) to the client information allowing the client to map a RTP session to one or more appropriate sub-bitstream.
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2.发明申请
公开(公告)号：WO2023047021A2
公开(公告)日：2023-03-30
申请号：PCT/FI2022/050637
申请日：2022-09-22
发明人： SCHWARZ, Sebastian , BACHHUBER, Christoph , RONDAO ALFACE, Patrice , KONDRAD, Lukasz , ILOLA, Lauri, Aleksi , MARTEMIANOV, Aleksei
摘要： The embodiments relate to a method for encoding and decoding. The method for encoding comprises receiving a volumetric visual object being defined with a mesh representing a surface and a set of interconnected parts; deriving a plurality of parts of the mesh which projection planes are aligned to; identifying the most relevant part from said plurality of parts for projection alignment; identifying most relevant surface normal of said most relevant part; updating an object rotation for every frame by aligning the identified most relevant surface normal in parallel to a surface normal of a projection plane; generating a bitstream containing information on object's alignment with a most relevant surface normal to be signaled to a decoder.
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公开(公告)号：WO2021205061A1
公开(公告)日：2021-10-14
申请号：PCT/FI2021/050211
申请日：2021-03-26
IPC分类号： H04N19/597 , H04N21/854 , H04N21/2343 , H04N21/2365 , H04N13/178 , H04N21/472
摘要： A method comprising: writing, in a container file, a first video-based point cloud compression (V-PCC) bitstream and a second V-PCC bitstream, wherein said first and second V-PCC bitstreams are associated with a common group based on at least one logical context; writing, in the container file, an indication about the common group between the first V-PCC bitstream and the second V-PCC bitstream; generating a media presentation description (MPD) file with a first representation belonging to a first adaptation set associated with the first V-PCC bitstream and a second representation belonging to a second adaptation set associated with the second V-PCC bitstream; and writing, in the MPD file, at least one information element describing grouping information of the first representation belonging to the first adaptation set and the second representation belonging to the second adaptation set, wherein said information element is provided with at least one attribute indicating that said first and second V-PCC bitstreams are user- switchable alternatives upon rendering.
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公开(公告)号：WO2021053270A1
公开(公告)日：2021-03-25
申请号：PCT/FI2020/050593
申请日：2020-09-16
IPC分类号： H04N13/161 , G06T19/20 , H04N19/597 , G06T15/08 , H04N19/70
摘要： Apparatuses, methods, and computer programs are disclosed to implement video-based point cloud compression model to world signaling. An example apparatus includes means for providing first signaling information (807) comprising information related to a world domain (811), wherein the world domain (811) is a point cloud frame that is represented by a number of points in a first volumetric coordinate system; and means for providing second signaling information (808) comprising information related to a conversion of a model domain (802) to the world domain (811), wherein the model domain (802) represents the point cloud frame by a number of points in a second volumetric coordinate system.
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5.发明申请
公开(公告)号：WO2022258879A2
公开(公告)日：2022-12-15
申请号：PCT/FI2022/050324
申请日：2022-05-13
发明人： ILOLA, Lauri Aleksi , BACHHUBER, Christoph , KONDRAD, Lukasz , KERÄNEN, Jaakko Olli Taavetti , MALAMAL VADAKITAL, Vinod Kumar
IPC分类号： H04N13/161 , G06T17/20 , G06T9/00 , G06T7/62 , G06T15/20 , H04N19/597 , H04N19/00
摘要： The embodiments relate to a method for encoding and decoding volumetric video. The embodiments also relate to equipment for implementing the methods. The method for encoding comprises obtaining one or more video sequences representing volumetric video; generating patches by converting samples of the volumetric video to one or more two-dimensional patches; analyzing a scene geometry of the volumetric video to identify depth contours and patch dimensions over one or more video sequences or over parts of the video sequences; as a result of analysis, deriving instructions for generating a mesh for rendering the volumetric video; and signaling said instructions along a volumetric video bitstream.
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6.发明申请
公开(公告)号：WO2022207961A1
公开(公告)日：2022-10-06
申请号：PCT/FI2022/050083
申请日：2022-02-11
IPC分类号： G06T17/00 , H04N21/44 , G06T19/00 , H04N21/854 , G06T19/20 , H04N21/472 , H04N21/218 , H04N21/6587 , G06F3/01 , G06T13/40
摘要： The embodiments relate to a method and a technical equipment for implementing the method. The method comprises (210) creating a scene structure for a three-dimensional media content, wherein the scene structure comprises three-dimensional data for objects of the three-dimensional media content; (220) determining dependency information for the objects, which dependency information indicates an external factor on which an object is dependent on; (230) storing a scene description defining the objects and their dependency information into a bitstream structure; (240) and transferring a generated scene description to a renderer.
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公开(公告)号：WO2023025980A1
公开(公告)日：2023-03-02
申请号：PCT/FI2022/050445
申请日：2022-06-22
IPC分类号： H04N13/161 , H04N19/46 , H04N21/2365 , H04N21/234 , H04N21/44 , H04N19/70 , H04N19/597 , G06T9/00
摘要： The embodiments relate to a method and technical equipment for implementing the method. The method comprises obtaining bitstreams of at least two 3D volumetric representations, wherein a first 3D volumetric representation is encoded according to a first format and a second 3D volumetric representation is encoded according to a second format (500); analyzing content and semantics of syntax elements of said at least two 3D volumetric representations (502); determining one or more signaling elements, based on the analysis, to indicate differences in the semantics of the syntax elements between the first format and the second format (504); and encoding the bitstreams of said at least two 3D volumetric representations into a multi-format volumetric representation (506).
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公开(公告)号：WO2023001623A1
公开(公告)日：2023-01-26
申请号：PCT/EP2022/069371
申请日：2022-07-12
IPC分类号： G06T9/00 , H04N19/597 , H04N19/70
摘要： The embodiments relate to a method for volumetric video coding, wherein the method comprises receiving a volumetric frame comprising three-dimensional data content; decomposing a three-dimensional model of the three-dimensional content into a collection of two-dimensional patches; encoding the three-dimensional data content, the encoding comprising a coding of a mesh related to the volumetric frame; identifying three-dimensional vertices on two-dimensional patch boundaries per patch; signaling neighboring patches per patch; and signaling connected boundary vertices. The embodiments also relate to a method for decoding and to apparatuses for implementing the methods.
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9.发明申请
公开(公告)号：WO2022224053A1
公开(公告)日：2022-10-27
申请号：PCT/IB2022/052406
申请日：2022-03-16
IPC分类号： H04N21/854 , H04N21/81 , H04N21/234 , H04N21/44 , H04N21/262 , H04N21/2343 , H04N21/458 , H04N21/84 , H04N21/434
摘要： Various embodiments provide an apparatus, a method, and a computer program product. The apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform: define or utilize file format syntax elements to indicate samples comprising at least one of: one or more description documents, wherein the one or more description documents comprise 3 dimensional information; or one or more updates to at least one description document of the one or more description documents; and define or utilize the file format syntax elements to indicate a relationship between samples containing the one or more description document and update information to the samples.
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10.发明申请
公开(公告)号：WO2021191495A1
公开(公告)日：2021-09-30
申请号：PCT/FI2021/050164
申请日：2021-03-05
IPC分类号： H04N19/597 , G06T15/40 , H04N13/178 , H04N13/117 , H04N19/70
摘要： The embodiments relate to a method comprising receiving an uncompressed first data (002) and corresponding uncompressed second data (001); generating (102) first set of patches with metadata (204) from the uncompressed first data, and generating (101) second set of patches with metadata (203) from the uncompressed second data, wherein the metadata (203) comprises at least visibility cone information providing patch visibility information; transmitting the generated first set of patches (202) and the second set of patches (201) for packing (300) into video frames (402); encoding the packed video frames by video encoder (502) into a video bitstream (602); encoding associated metadata (401) by an atlas encoder (501) into an atlas bitstream (601); and encapsulating (700) the video bitstream and the atlas bitstream according to visual volumetric video-based coding into a bitstream. The embodiments also relate to a method for decoding and rendering, as well as to technical equipment for implementing the methods.
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